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arm

1
[ ahrm ]
/ ɑrm /
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noun
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Idioms about arm

Origin of arm

1
First recorded before 900; Middle English; Old English earm; cognate with Gothic arms, Old Norse armr, Old Frisian erm, Dutch, Old Saxon, Old High German arm (German Arm ) “arm,” Latin armus “shoulder” and arma (neuter plural) “tools, weapons”; akin to Serbo-Croatian rȁme, rȁmo “shoulder”; Sanskrit īrmá, Avestan arəma-, Old Prussian irmo “arm”; see arm2

OTHER WORDS FROM arm

armed, adjectivearmlike, adjective

WORDS THAT MAY BE CONFUSED WITH arm

alms, arms

Other definitions for arm (2 of 6)

arm2
[ ahrm ]
/ ɑrm /

noun
Usually arms . weapons, especially firearms.
arms, Heraldry. the escutcheon, with its divisions, charges, and tinctures, and the other components forming an achievement that symbolizes and is reserved for a person, family, or corporate body; armorial bearings; coat of arms.
verb (used without object)
to enter into a state of hostility or of readiness for war.
verb (used with object)

Origin of arm

2
First recorded in 1200–50 for the verb; 1300–50 for the noun; Middle English verb armen, from Anglo-French, Old French armer, from Latin armāre “to arm, equip,” verbal derivative of arma (neuter plural) “tools, weapons”; Middle English noun armes (plural), from Old French armes, from Latin arma (neuter plural reinterpreted as a feminine singular); akin to arm1

OTHER WORDS FROM arm

armless, adjective

Other definitions for arm (3 of 6)

Arm

abbreviation

Other definitions for arm (4 of 6)

ARM

adjustable-rate mortgage.

Other definitions for arm (5 of 6)

Arm.

abbreviation
Armenian.
Armorican.

Other definitions for arm (6 of 6)

Ar.M.

abbreviation
Master of Architecture.

Origin of Ar.M.

From New Latin Architecturae Magister
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use arm in a sentence

British Dictionary definitions for arm (1 of 4)

arm1
/ (ɑːm) /

noun
verb
(tr) archaic to walk arm in arm with

Derived forms of arm

armless, adjectivearmlike, adjective

Word Origin for arm

Old English; related to German Arm, Old Norse armr arm, Latin armus shoulder, Greek harmos joint

British Dictionary definitions for arm (2 of 4)

arm2
/ (ɑːm) /

verb (tr)
to equip with weapons as a preparation for war
to provide (a person or thing) with something that strengthens, protects, or increases efficiencyhe armed himself against the cold
  1. to activate (a fuse) so that it will explode at the required time
  2. to prepare (an explosive device) for use by introducing a fuse or detonator
nautical to pack arming into (a sounding lead)
noun
(usually plural) a weapon, esp a firearm
See also arms

Word Origin for arm

C14: (n) back formation from arms, from Old French armes, from Latin arma; (vb) from Old French armer to equip with arms, from Latin armāre, from arma arms, equipment

British Dictionary definitions for arm (3 of 4)

ARM

abbreviation for
adjustable rate mortgage

British Dictionary definitions for arm (4 of 4)

Arm.

abbreviation for
Armenia(n)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for arm

arm
[ ärm ]

n.
An upper limb of the human body, connecting the hand and wrist to the shoulder.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Other Idioms and Phrases with arm

arm

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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